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Round|Lab Grown|IGI

1.91ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG817693378

Shape and cutting style on the report: Round brilliant

Certificate IGI LG817693378

Diamond specifications and retailer prices

From $1,037 USD
As of October 29, 2026
Save $5,393 USD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,430 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.91ct lab-grown round diamond

This 1.91ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817693378 or 817693378. Listed at 21 retailers as of October 29, 2026, with prices from $1,037 to $6,430, a $5,393 spread on the same certified stone. Brilliant Earth lists it at $6,430. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817693378
Dimensions8.05 × 8.11 × 4.87 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.05 mm8.11 mm1.91 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817693378
Side View
Table 57.0%Crown 33°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 60.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $6,430 USD|Low: $995 USD|High: $6,430 USD|Avg: $2,463 USD|+0.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 14$1,037 USD
Retailer 5$1,128 USD
Retailer 7$1,161 USD
Retailer 15$1,203 USD
Retailer 13$1,375 USD
Retailer 2$1,735 USD
Retailer 3$1,919 USD
Retailer 9$1,922 USD
Retailer 8$2,211 USD
Retailer 6$2,255 USD
Retailer 12$3,510 USD
Retailer 11$3,553 USD
Retailer 4$4,036 USD
Retailer 10$4,086 USD
Brilliant Earth$6,430 USD

39 data points across 15 retailers

21 retailers$1,037 USD to $6,430 USD

A
Cheapest Retailer
-
$1,037 USD
A
Retailer 2
-
$1,128 USD
View
A
Retailer 3
-
$1,161 USD
View
Final sale: no returns
Retailer 4
-
$1,203 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$1,203 USD
View
B+
Retailer 6
-
$1,375 USD
View
B+
Retailer 7
-
$1,395 USD
HK$10,900 HKD
View
B+
Retailer 8
-
$1,707 USD
View
B+
Retailer 9
-
$1,735 USD
£1,366 GBP
View
B+
Retailer 10
-
$1,919 USD
View
B+
Retailer 11
-
$1,922 USD
€1,830 EUR
View
B+
Retailer 12
-
$2,211 USD
ZAR 35,722 ZAR
View
B+
Retailer 13
-
$2,255 USD
View
B
Retailer 14
-
$2,514 USD
View
B
Retailer 15
-
$3,510 USD
View
B
Retailer 16
-
$3,553 USD
View
B
Retailer 17
-
$3,865 USD
View
B
Retailer 18
-
$4,036 USD
SGD 5,454 SGD
View
B
Retailer 19
-
$4,086 USD
£3,217 GBP
View
B
Retailer 20
-
$4,198 USD
View
Most Expensive
B
Brilliant Earth
20860275A · Oct 29
$6,430 USD
View
20 more retailers have this diamond
Prices start from $1,037 USDSave up to $5,393 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.91ct Round
$1,037 USD